Ubuntu armhf domestic version Source:
deb http://mirrors.ustc.edu.cn/ubuntu-ports/ great main restricted universe multiverse
deb http://mirrors.ustc.edu.cn/ubuntu-ports/ great-backports main restricted universe multiverse
deb http: / /mirrors.ustc.edu.cn/ubuntu-ports/ great-proposed main restricted universe multiverse
deb http://mirrors.ustc.edu.cn/ubuntu-ports/ great-security main restricted universe multiverse
deb http: // mirrors .ustc.edu.cn / ubuntu-ports / great-updates main restricted universe multiverse
deb-src http://mirrors.ustc.edu.cn/ubuntu-ports/ great main restricted universe multiverse
deb-src http: // mirrors .ustc.edu.cn / ubuntu-ports / great-backports main restricted universe multiverse
deb-src http://mirrors.ustc.edu.cn/ubuntu-ports/ xenial-proposed main multiverse restricted universe
deb-src http://mirrors.ustc.edu.cn/ubuntu-ports/ xenial-security main multiverse restricted universe
deb-src http://mirrors.ustc.edu.cn/ubuntu-ports/ xenial-updates main multiverse restricted universe